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The Elite Builder Patriot 80% Lower Jig - AR9/AR10/AR15

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The Elite Builder became one of the most popular jigs when it comes to fabricating a 5.56 or 9mm 80% lower. Now, The Elite Builder Patriot Jig can complete virtually all the AR platforms' 80% lowers! We included new template plates so the jig can also cut and drill .308 lowers. Now it's a top choice for completing an 80% 6.5mm or AR-10 / LR-308, too. Pair it with the Patriot Pack and get all 3 lowers with your jig. With its hardened alloys and precision drill bushings, the Elite Builder will knock out your forged, billet, and polymer receivers with tolerances as close as 0.001".

NEW! You can now choose to include an enhanced drill plate to make it easier for you to drill your fire control cavity.

PLEASE NOTE: Tooling (drill bits and end mill bits) for this jig is optional. You'll need to select whether you would like accompanying tooling with your jig.

Optional HSS Bits for Multiple Builds

The jig’s only as good as the bits you use it with. So with your Elite Builder Patriot Pack, you can choose to include quality industrial-grade HSS (high-speed steel) drill bits and end mill bits that'll cut through all that aluminum in no time. All you need to complete your receiver blank is a basic drill press and about two hours’ time. The tool kit includes:

  • (1) ⅜ Drill Bit - 5”
  • (1) 5/32 Drill Bit - 3”
  • (1) ⅜ Short End Mill - 3” 
  • (1) 5/16 Short End Mill - 4”
  • (1) ⅜ Long End Mill - 4”

Jig Features & Specs:

  • Self-aligning jig requires no special fitting during setup
  • Now compatible with AR-10/LR-308, AR-15 and AR-9
  • Black anodized finish protects against rust and corrosion
  • Pre-drilled holes for hammer, trigger, and safety pin holes
  • Reinforced steel template plates for completing multiple lowers

Video Instructions

Find detailed jig assembly and machining instructions here.

Other manufacturer's billet 80% lowers may be compatible with the Elite Builder 80% lower jig, provided their lower receiver design adheres to mil-spec specifications.

*Important - This jig was designed with a drill press in mind for completing your 80% lower and is not designed to be used with a router/laminate trimmer.

WARNING: Handling firearms parts and accessories can expose you to lead and other petroleum products known to the State of California to cause cancer and reproductive harm. For more information go to:

Shipping Restrictions

Shipping of various parts and/or accessories are prohibited to states and locales (ie New Jersey, California, New York, etc…) with restrictions against certain parts and/or accessories or "assault weapons" (i.e. states with high-capacity magazine restrictions, manufacturing of semi-automatic weapons, etc..). It is your responsibility to be aware of your local firearms laws before purchasing from our website or machining a firearm. We try our best to keep our shipping page current, but laws change daily. only ships within the United States. Federal legislation dictates we cannot ship our products internationally.

.223 Wylde
.300 AAC Blackout
.308 Winchester
6.5 Creedmoor

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